Simple Comment System Using JavaScript

imaneo · 2025-02-27T03:10:14+0000

In this code we will try to create Simple Comment System using JavaScript. The program will dynamically display the comment that you submitted. You are free modify this code, and you can use this to your on working system. To learn more about this, just follow the steps below.

Getting started:

First you have to download bootstrap framework, this is the link for the bootstrap that I used for the layout design https://getbootstrap.com/.

The Main Interface

This code contains the interface of the application. To create this just write these block of code inside the text editor and save this as index.html.

<!DOCTYPE hmtl>
<html

lang

=

"en"

>
<head

>
<meta

charset

=

"UTF-8"

name

=

"viewport"

content

=

"width=device-width, initial-scale=1"

/

>
<link

rel

=

"stylesheet"

type

=

"text/css"

href

=

"css/bootstrap.css"

/

>
</

head

>
<body

>
<nav class

=

"navbar navbar-default"

>
<div

class

=

"container-fluid"

>
<a

class

=

"navbar-brand"

href

=

"https://sourcecodester.com"

>

Sourcecodester</

a

>
</

a

>

</

div

>
</

nav>
<div

class

=

"col-md-3"

></

div

>
<div

class

=

"col-md-6 well"

>
<h3

class

=

"text-primary"

>

Simple Comment System Using JavaScript</

h3

>
<hr

style

=

"border-top:1px dotted #ccc;"

/

>
<div

class

=

"col-md-8"

>
<div

class

=

"alert alert-info"

>

div

>
<div

id

=

"result"

></

div

>
</

div

>
<div

class

=

"col-md-4"

>
<form

>
<div

class

=

"form-group"

>
<label

>

Name</

label

>
<input

type

=

"text"

id

=

"name"

class

=

"form-control"

/

>
</

div

>
<div

class

=

"form-group"

>
<label

>

label

>
<textarea

id

=

"comment"

class

=

"form-control"

style

=

"resize:none; height:150px;"

></

textarea

>
</

div

>
<center

><button

type

=

"button"

class

=

"btn btn-primary"

onclick

=

"postComment();"

>

Send</

button

></

center

>
</

form

>
</

div

>
</

div

>
<script

src

=

"js/script.js"

></

script

>
</

body

>
</

html

>

Creating the Script

This code contains the script of the application. The code will display a comment when user submit the form. To do this just copy and write these block of codes inside the text editor, then save it as script.js inside the js folder.

function

postComment(

)

{
var

name=

document.getElementById

(

'name'

)

.value

;
var

comment=

document.getElementById

(

'comment'

)

.value

;
if

(

name ==

""

||

comment ==

""

)

{
alert(

"Please enter something first!"

)

;
}

else

{
var

parent=

document.createElement

(

'div'

)

;
var

el_name=

document.createElement

(

'h5'

)

;
var

el_message=

document.createElement

(

'p'

)

;
var

el_line=

document.createElement

(

'hr'

)

;
var

txt_name=

document.createTextNode

(

name)

;
var

txt_message=

document.createTextNode

(

comment)

;
el_name.appendChild

(

txt_name)

;
el_message.appendChild

(

txt_message)

;
el_line.style

.border

=

'1px dotted #ccc'

;
parent.appendChild

(

el_name)

;
parent.appendChild

(

el_line)

;
parent.appendChild

(

el_message)

;
parent.setAttribute

(

'class'

,

'well'

)

;
document.getElementById

(

'result'

)

.appendChild

(

parent)

;
document.getElementById

(

'name'

)

.value

=

""

;
document.getElementById

(

'comment'

)

.value

=

""

;
}
}

There you have it we successfully created a Simple Comment System using JavaScript. I hope that this simple tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!

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